 /*******************************************************************************
  * Copyright (c) 2003, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.osgi.internal.resolver;

 import org.eclipse.osgi.service.resolver.BundleDelta;
 import org.eclipse.osgi.service.resolver.BundleDescription;

 public class BundleDeltaImpl implements BundleDelta {

     private BundleDescription bundleDescription;
     private int type;

     public BundleDeltaImpl(BundleDescription bundleDescription) {
         this(bundleDescription, 0);
     }

     public BundleDeltaImpl(BundleDescription bundleDescription, int type) {
         this.bundleDescription = bundleDescription;
         this.type = type;
     }

     public BundleDescription getBundle() {
         return bundleDescription;
     }

     public int getType() {
         return type;
     }

     protected void setBundle(BundleDescription bundleDescription) {
         this.bundleDescription = bundleDescription;
     }

     protected void setType(int type) {
         this.type = type;
     }

     public String toString() {
         return bundleDescription.getSymbolicName() + '_' + bundleDescription.getVersion() + " (" + toTypeString(type) + ")"; //$NON-NLS-1$ //$NON-NLS-2$
 }

     private static String toTypeString(int type) {
         StringBuffer typeStr = new StringBuffer ();
         if ((type & BundleDelta.ADDED) != 0)
             typeStr.append("ADDED,"); //$NON-NLS-1$
 if ((type & BundleDelta.REMOVED) != 0)
             typeStr.append("REMOVED,"); //$NON-NLS-1$
 if ((type & BundleDelta.RESOLVED) != 0)
             typeStr.append("RESOLVED,"); //$NON-NLS-1$
 if ((type & BundleDelta.UNRESOLVED) != 0)
             typeStr.append("UNRESOLVED,"); //$NON-NLS-1$
 if ((type & BundleDelta.LINKAGE_CHANGED) != 0)
             typeStr.append("LINKAGE_CHANGED,"); //$NON-NLS-1$
 if ((type & BundleDelta.UPDATED) != 0)
             typeStr.append("UPDATED,"); //$NON-NLS-1$
 if ((type & BundleDelta.REMOVAL_PENDING) != 0)
             typeStr.append("REMOVAL_PENDING,"); //$NON-NLS-1$
 if ((type & BundleDelta.REMOVAL_COMPLETE) != 0)
             typeStr.append("REMOVAL_COMPLETE,"); //$NON-NLS-1$
 if (typeStr.length() > 0)
             typeStr.deleteCharAt(typeStr.length() - 1);
         return typeStr.toString();
     }

     public int compareTo(Object obj) {
         long idcomp = getBundle().getBundleId() - ((BundleDelta) obj).getBundle().getBundleId();
         return (idcomp < 0L) ? -1 : ((idcomp > 0L) ? 1 : 0);
     }
 }

